Chart (5)
'chart' is the definition.
(I know that chart is a more specific form of map)
This is all the clue.
(Other definitions for map that I've seen before include "(Make a) geographical representation" , "Travel guide" , "Representation of earth's surface as a guide" , "Diagram of an area" , "Diagram of part of the earth's surface" .)
'chart' is the definition.
(pie chart is a kind of chart)
This is the entire clue.
(Other definitions for pie that I've seen before include "Dish baked in pastry-lined pan" , "In the sky, it's a hopeless idea" , "something with custard, say" , "Filled pastry" , "Cooked food" .)
'chart' is the definition.
(I know that chart can be written as graph)
This is the entire clue.
(Other definitions for graph that I've seen before include "Mathematical diagram" , "Diagram showing the relationship between variable quantities" , "A plotted chart" , "Visual representation" , "Geometrical diagram" .)